Please explain this correctly will upvote

Consider a system with 3 I/O devices

• Printer (priority of 2)
• Disk (priority of 4)
• Communication line (priority of 5)

Higher priority is indicated by high numerical value.

User program begins at t = 0 and the multiple interrupts occur at following time instances

• At t = 10, Printer interrupt occurs
• At t = 15, Communication interrupts occurs
• At t = 25 Disk interrupt occurs

Show the time sequence of multiple interrupts, assuming that service routine for Printer interrupt takes 30 time units, Disk interrupt takes 10 time units, and Communication interrupt takes 5 time units.